It’s brilliant to see you are so creative and have so much energy and enthusiasm, despite being knocked a bit but those doing the knocking are right.
Before you look any further into these ideas, please, please get the figures down on paper.
I know you seem to have moved on from the idea of the private members club for mums and babies but going back to that you said a turnover of £52k membership, £20k on food and £13k on classes - £85k. The VAT registration point is £81k. So you either instantly have to add 20% to your prices or lose the VAT from your margins. Being VAT registered means you will be able to reclaim VAT from your VAT registered suppliers so some of it will be cancelled out. The £3k per month rent – inc VAT or plus? How much will your business rates be per annum? Have you thought about insurance? You will need insurance to include public liability. Utilities at £5k – are you sure about this? Where have you got the figure from? Wages? How much will you pay? Do you know the length of tenancy you have to take out? What if you rent the building/room and no one/not enough people join? You still have to pay the monthly rental, rates and utilities. How will you manage this?
I run a business. My rent is less than £20k per annum. My rates are £6k. Utilities are £4k. Insurance £3k. I’m not going to give you the figure I pay out on wages and other bills but before I can even think about profit, I have to turnover £4k a week. That’s £208k a year just to break even.
You say you don’t have the money to invest. Then don’t even think about setting up your own business. My business shouldn’t need director/shareholder input but occasionally it does. You get a quiet month but the bills still need paying. All of a sudden, you have to find £10k and you know you’re not going to get that back the very next month. How will you pay for the equipment you'll need to start up?
Running a business is tough. Seriously tough and in all honesty, I wouldn’t do it again.
The new idea about a drop in centre for private members is even less likely to work. I sometimes need to meet clients outside the office for a variety of reasons. I’m either going to hire a conference room for a day or I’m going to suggest a bloody nice restaurant. 
If you truly want to do something like this, research it well. Look at what else is around, look at your target market, look at other business models and make sure your figures stack up. Make sure you have a contingency plan for the quiet times or if it doesn’t work.
Sorry if any of this sounds harsh, I really don't mean to come across that way.