stork sorry you've had more confusion, there are so many tough decisions in this process - you think you have a plan and then along comes another curveball/choice to make, with all the financial/practical/emotional considerations to rebalance! But I also think you're approach sounds sensible. I think it's good to trust your instincts sometimes, ultimately it is your treatment and it's important you feel comfortable with the way forward.
wonky I have also only had good reactions! Mostly I have been blown away by how positive and supportive people are - from friends and family, to work colleagues (the ones I've told), and random folks like my hairdresser! I've never had a negative reaction, occasionally people are a bit surprised or don't say very much, or I have had a couple of people say 'that's a very big decision' (oh is it? I just woke up this morning and thought I'd do it on a whim!) but nothing negative. Even my mum emailed me to say she'd told one of her elderly relatives to see what her reaction would be - it was 'good for her!!' 
Having said that though, obviously not being pregnant yet I have been able to pick and choose who I have told - there are a few people I feel a bit anxious about finding out once I'm pregnant and can't hide it, anxious is maybe too strong a word - but people like my next door neighbour who I really like and would love my kid to get to know as she seems like an awesome granny to her own grandkids. Other people like more random work colleagues I suspect might be an bit surprised but I don't really care what they think. I've also been amazed how many people know someone else who's either done it alone or is considering it, I think it must be increasingly common!
I'm not ashamed of my decision and don't mind who knows how I've done it - people have children in all sorts of circumstances and my baby will have been very carefully planned and fought for! In fact, I normally think if myself as quite a boring person but reckon this us the most interesting thing I've done - people generally are just really fascinated and want to talk about it! Sorry rambled on a bit there.
ever wait, you mean FOUR babies?! Oh yikes! Talk about being outnumbered!
london i am not looking forward to the pessaries! I seem to have been given about a million of them! But glad you brought it up as now have some good tips :) Hope you're feeling reassured.
So my update is that I have the definite go ahead from my clinic, and my AF started this evening so am all ready for my baseline scan/starting stimms on Monday! Eeeeep. Please tell me it's totally normal to have a minor freakout at this point? After so long waiting and being desperate to start, I just woke up from a nap thinking 'omg what am I doing?! My life may never be the same again!'. But I've had other wobbles along the way and got this far, it's not going to stop me as deep down I know that it's just fear of the unknown, and that NOT doing it is much more scary to me. Eeep though!