Makes sense fish.
I doubt you'd have much difficulty with longitudinal cuts with a decent hand saw and a firm table with a couple of G-clamps, by the way. Circular hand saws frighten me, so I don't use them. I have seen the result of getting it wrong in a friend who lost two and a half fingers using one to do the same job. I do have a mitre saw which makes cross-cutting a lot quicker and easier however.
For floorboards, you need to beg, borrow, steal or (in extremis) hire a decent nail gun. Even a less powerful one makes pinning down the stuff you are using a lot easier, but you'll need a hammer and punch to drive it completely home.
I recently did my daughters flat with solid wood. It went down perfectly although being a new building the sub floor was perfectly flat. I took off the existing skirting boards and replaced them with new, ready painted ones which I glued in place to cover the expansion gap. I thought I'd have to pin them, too, but in fact that proved quite unnecessary. The walls were flat too. Sadly this is not often the case in my experience. Certainly not in my home which is over 100 years old!