I have a mf 165 that I've been food plotting, bush hogging with for almost 30 years, put about 200 hours on it per year. It's 53 pto hp. As long as there is juice in the battery, it will start and run no matter how long it's been sitting.
Bought a new mf 2615, 43 pto hp, about 5 years ago and it will do everything I need to do. I keep the 165 at my lease and we still use it on a regular basis and I think it will probably still be going strong when I'm 6 feet under. Both tractors are 2wd and that's never been a problem for me, neither one has a loader.