I had a tummy tuck 3 years ago now. I also had a (second) breast enlargement a few months later. I wouldn't suggest having breasts done at the same time as a tummy tuck, but some people do and manage fine.
Full recovery is really about 6 months. You do get a lot of swelling on and off until then. I would say up to a year to see the full results too. I found the first week almost unbearable pain wise tbh, it was horrendous. (and I am someone who didn't even take a single painkiller after my breast enlargement!) After that it got much better quite quickly and by two/three weeks post op I did feel pretty normal and had to remind myself not to pick up small children! My youngest was 5 at the time, but he has Downs Syndrome, so took a lot more care than an average 4 year old.
I paid £5600 and that included a full tummy tuck, muscle repair, lipo to my waist/tummy area and also to my outer thighs. It also included aftercare and any repeat surgery I required it was because there was a genuine problem, not just me being unreasonably fussy! (as is the usual case) I flew to England for the surgery (I live in NI) and flew back 2 days post op. My DH flew over to meet me at the airport and I couldn't have managed without him tbh. I needed a wheelchair as I couldn't walk further than about 10ft.
I don't think it improved my confidence. As said above, I was happy to wear a bikini on holiday with my saggy stretchmarked tummy. It did give me the freedom to wear different clothes though and not always have to be conscious of covering up my tummy, which was blatantly obvious in clothes. Not so much everyday things, but dresses for functions etc.
I would suggest having realistic expectations about what results you will get and expect your surgeon to be honest with you. Most people can expect a huge improvement on what the have, not perfection. See several different surgeons before you decide on one and be wary big companies can be very hard sell and not always professional enough. If you do use a big company, research the actual surgeon rather than the company, as some are good, some not so much so. Also, a lot of the big companies do not use BAAPS registered surgeons.
My friend had her tummy tuck done in Prague. She was/is extremely happy with it, the surgeon she saw and the service she received. She saved an awful lot of money, I think she paid around £2600. The surgeon she used has a good repuation and for after care as well.
I am on my second pregnancy since I had my tummy tuck.
I hadn't intended any more DC. I'm hoping my tummy will still be reasonable after this pregnancy, but I won't be having further surgery whatever happens.
There are some before and after photos here: (I still had quite a few strechmarks afterwards as they had been above my belly button prior to my surgery, so were just 'moved down', overall I had 3KG of skin and fat cut away and then 3 litres of fat lipo'd away)
Before:
www.picturetrail.com/sfx/album/view/20291887
4 weeks after, not properly healed yet, but you get an idea:
www.picturetrail.com/sfx/album/view/20465929