First of all Bozi you are on the right track and you don't even realize it!
When you start talking tractor and the wife walks away that is a VERY good sign. You are starting to wear her down. Keep it up.

I researched tractors/implements for a good 15 months before I bought one. Every day I would go home and tell the wife, "Guess what I read on TBN today?" Oh, did she HATE that question!

"All you ever talk about is that tractor!", said the wife.
Eventually she gave in and I got the tractor. The bad thing, at least for her, is that I still come home and say, "Guess what I read on TBN today?" LOL! Poor Wifey!
Course she did get a horse! So she is in the lead Toy Wise.....
But I use the tractor FAR more than she rides that furry critter.
My two cents on the tranny. I don't think you want a non-sync tranny. I drove a manual truck and I wanted a tractor tranny that would drive the same way. So I wanted sync tranny at a minimum but I did not want an HST gearbox either. I ended up with the PowerReverser tranny which I think was a danged good compromise in the dollar department and ease of use. On the 4700 the HST takes away 1.5 HP compared with the PowerReverser. I wanted to maximize HP.
But this is very much a personal decision. For the last couple of work days I was doing FEL work all day long. I could see how I COULD have been slightly more productive with an HST tractor. It would not have been much of a time savings but it would have reduced my control movement. Not a big deal though. I still like my PowerReverser.
Hope this helps....
Dan McCarty