money to buy shop/flat

bamberbamboo

Afternoon, (I've put this on the small biz board but no reply's so maybe someone here can help so here goes)

I've been looking at a shop (Corner shop type) with large flat above which I would rent out, and would like to buy this with my friend however we do not want to use our homes as collateral also we don't have much money to put as a deposit (we do have 10%) but know we could make the business work so what I need to know is

1. what is the most mortgage we could get?
2. could we get a self certification mortgage on this? the buildings are worth more than is being asked so survey no problem,
3. also I've read somewhere (but can't remember where!) if the living accommodation was more than 40% then a residential mortgage may be possible,
4. and finally any recommendations of a good adviser for mortgages.

The property is £155 thousand, with business t/o £190 thousand + flat rental of £3600.

many thanks