You don't really need the bit about asking whether your OH will be allowed in if you have a c-section. Partners are allowed in unless you have to have general anaesthetic, but they by no means force. I wouldn't have been thrilled if my OH had decided against coming in though, as I was scared as hell and needed to hold his hand!
Your wishes are made clear, and that's what a birthplan is for, so in that regard it's good
only thing I'll say is that in an emergency, it'll all go out the window, so be prepared for that too. I was all lined up for a water birth with delayed cord clamping and immediate skin to skin and maybe breast shuffling and a 6 hour discharge from hospital, but my LO was 18 days late, with heavy (really heavy-he came out brown!) meconium staining and got distressed by the induction drip, so I had an emergency c-section, didn't see LO for 1.5 hours, didn't really hold him until the next day (after he'd been left all night in wet clothes, but that's another story), hospital for 3 days and he wouldn't latch on so we cup fed and expressed every 2 hours round the clock for 8 days until he finally latched on. Not exactly what I'd imagined!
So yeah, it's worth having a plan, but like I say, hope for the best and plan for the worst! Most midwives are pretty good, just busy.
Good luck with the last weeks of your pregnancy