Death in Scotland - Confirmation, Insolvency & Selling the Property

confused_

Hi all,
I'm hoping someone may be able to provide me with some guidance here as I am unsure what the best course of action to take is.

My Mother passed away in May of this year (no will) having been sequestrated in October last year. She had been poorly for quite some time and had not been able to provide the Trustee's with the information they required prior to her passing however from more recent discussions with them, this does not seem to make any difference at this stage. It is my understanding that we (myself and my two brothers) will need to sell the property (only asset, worth about £100k) in order to clear the funds in which the Trustees seek (approx. £11-12k).

Due to the complications above, I got in touch with a solicitor and explained the situation and they have been in touch with the Trustees to enquire whether they were happy for our Solicitor to manage the estate and sale of the property, to which the Trustee advised that they have no issues with the solicitor being involved, however the Trustees would require use of their own solicitors for conveyancing and transfer of the property once sold. The Solicitor I had been discussing with then advised that there's not really much they could do for us in this case as ultimately the Trustees will have more control over the sale but they had not gone in to full details as the Trustee did not have authority to discuss with our Solicitor as of yet. 

I called the Trustee involved who advised that this was correct, they would be happy for us to arrange for a real estate agent of our choice but, as above, conveyancing and transfer costs would be via their own solicitors which they admittedly advised are a higher cost than usual given they specialise in insolvent estates. They confirmed that any offer received would be ran by ourselves and they would not just accept a low-ball offer as they were satisfied they would receive the creditors money regardless of what the house sells for. So all in all, we are expecting the trustee's to take around £20k from the sale for the creditors, their fees & selling of the property as a guestimate.
I'm therefore at a loss as to whether it is worth appointing a solicitor to assist with this matter as it appears that the Trustees will be involved regardless.

Another potential option would be to borrow money (from another family member) and clear the creditors debt and repay the family member once the house sells. Obviously this would be subject to an agreement that once the house has been sold and the funds distributed, both my brothers and I would need to repay our share of the debt back to this family member from our share from the sale. (Would this be the correct course of action in this scenario?) 

My next issue is in regards to applying for  confirmation. This is something that I understand can take a considerable about of time and needs to be done correctly so I want to get moving on this (probably should have been done sooner, I know).
I have had a look and understand that in order to obtain confirmation, we are required to complete forms C1 and C5. I'm not sure how we go about getting these to the Sherrif's Court's office given the current situation (this may be a dumb question), do we post these, if so, whom do we address it to? Can we drop them off in person? I have tried to call but I get no answer despite the website advising our local office is open.
Is it sensible for us to be looking to obtain confirmation ourselves or is this something a solicitor would normally do and confirmation would be granted to them? Should we be getting a solicitor involved regardless due to the value of the estate and no will in place?

Another question is, should we post in the Gazette now? Is this necessary? I understand in Scotland that creditors have up to 6 months from someone's passing to make a claim against the Estate. If they do this, do they wait until the property has been sold in order to get their money? There's no money sitting in bank accounts that is readily available to pay out. Is this something a solicitor would do if we were to appoint one or are we best to pay the £84 to do this ourselves instead of incurring additional solicitor costs should they arrange for this?

Apologies that there's a lot of information here, my head is spinning from trying to understand this all myself. 
Any help appreciated.

Thank you