Sally, I'm sorry you're in so much pain but glad you're on mat leave now. It's horrid when the mw makes you feel like that, can be so hit and miss 
Pesto, try not to panic about prams! We were keen on the Oyster Max and were also considering the iCandys (but pricey) and the Easywalker June (but could only see it online so couldn't test it out). In the end we decided they were a bit too big and bulky for central London, public transport and our little narrow Victorian terrace. Do you feel you have a list of priorities? EG for me they were ease of folding and parent facing for as long as possible. I realised too late that size/bulkiness mattered a lot! Things like shopping basket, adjustable handle etc were less important to us.
If you have a list of priorities maybe take that to JL as a starting point and see what they suggest to start with?
Having said that, we just went to JL to try the Ergo Baby carriers and the three sales assistants were useless. They claim to be experts but they didn't answer any of my questions without running off to check (by which time I'd Googled for myself anyway) and they just kept pushing the Baby Bjorn even though I said I wasn't keen on the baby position (carrying from hips vs kness). I was so unimpressed with their service and knowledge.
We did buy the Ergo Baby in the end - DH found it a bit tricky to get on but we tried it a few times and it got easier so I think with a bit of practice we'll be ok.
I was impressed my parents still had the crib in such condition - it's been used for 4 of us - me 29 years ago through to my brother 15 years ago, but they've definitely taken care of it over the years. It's beautiful :) Have ordered a custom mattress for it as I can't find any the right size, but even that was surprisingly cheap.