I agree with the above posters, go for a skills refresher as a paramount need.
If you are going to do 100k each way I regularly travel 50+ k's to work each way. I'd not look at smaller that 750cc.
You have said you want comfort and distance ability as a preference.
What do you want to spend on the bike? You can pick up low K's 1000cc+ bikes very reasonably priced if you hunt around. (I grabbed my ZZR with 30k for 5.25k)
Old FJ1200 are about (jap import) FZ1000 (fazer). 1200/1250 bandit. GS1400, FJR11/12/1300's all are good all rounders, reliable, well proven motors and able to cover large distances easily... which if its 200k a day, will soon clock up some high milage on any engine.
If the road to hell is paved with good intentions; and a man is judged by his deeds and his actions, why say it's the thought that counts? -GrayWolf
Bookmarks