My new SOA - need motivation

Hi all. Now my ex is leaving I've decided to do a new SOA. I know what you're already going to say, but maybe if people tell me I'll actually do it! I haven't used the template, because most of it doesn't apply and so I need to explain things as I go.

Number of adults: 1
Number of children: 0
Cars: 1.

Rent from council, get benefits and so no rent or council tax.

Income: 920 (this is per 4 weeks, but I get in a mess if I work it out per month as most months the income is less, and so for the first year I have to base it on four weekly amounts until I've got the spare money saved to cover it).

Outgoings:

Electric: 41
Water: 28 (have permission for a water meter, it's on my list of things to sort out in the next few weeks)
Food (sister): 120 (She's unemployed and I buy her food. No idea how long this will go on for. Can't lower this as she complains it's not enough as it is)
Food (me): 120 (Can't lower this, I have ME and can't batch cook or cook from scratch due to fatigue and pain. Have to buy ready prepared food which is more expensive.
Credit union savings: 5
Petrol: 80 (hopefully this will go down with ex going, but as I have limited mobility I have to drive everywhere. It's a motability car so no other car costs).
Tv licence: 12
Landline: 15
Broadband: 10
Sky tv: 35 (I know I need to get rid)
Mobile: 10 (I prefer to make calls to mobiles using this so I know where I am instead of running up bills. My sister only has a mobile. I get free texts)
Insurance: 12 (I don't have this yet, but it's on my list to sort out asap)
Cleaner: 50 (This is a guesstimate based on £10 an hour. I'm thinking I'll need an hour a week for basic cleaning of the flat, and a deeper clean every two or three months)
Personal spending: 100 (this includes presents, entertainment, hairdressing, clothes etc).
Holiday: 30 (I like to go to Leeds festival every year, I could cut it out for a year or two though I suppose)

Total: 658.
Now the things I need to save up for:

Next month I'm going to Leeds festival with my sister, so I need £100 for our food, drink, and a new trangia stove.

Home things: I need more storage, and the place is getting rewired next year, so I need to save up for redecorating costs. I've recently got a grant for a sofa and bed but need to put money towards. So in the next few months I need £100, and then over the next 18 months I need to save up around £500.

I've got a holiday booked in December, I need £100 for the holiday, then spending money. It's only for three days though, but the friends I'm going with have expensive tastes and usually want to drink in rounds etc. I think I need £150 to make sure I have enough.

Education: Over the next three years I need £100 per year for OU courses, then in the fourth year I need around £3500 for a masters.

Debts: I want to clear these within the next year to 18 months, I think for full and finals I'll need to save up around £1200.

Car repairs: My car has been vandalised and I need an insurance claim which is £75.

If there are any maths geniuses out there who can work out how much I need to save towards each one a month that'd be great, I've been trying to work it out myself but my brain packed its bags and ran away!

I'm waiting for a social services assessment and may need to pay for some of the care, when I was assessed last time I didn't have to pay though so I'm working on the assumption that I wont this time.

Please be harsh, but don't be judgemental.