I was looking for a long time searching on craigslist for a RZ350 for under $3k but came across this super clean 37k mile FZR 400 and just had to add it to my garage! I have only owned Kawasaki's but now officially a Yamaha owner!

I am impressed so far with the size of the bike and looking to go through the bike as it was sitting for the last 10+ years in a garage after the previous owner went through the bike and fixed some issues.
I am a big guy at 6'4", but I make every bike look like a toy motorcycle but being a guy who has had heavier sport bikes I am looking forward to going back to a much lighter bike so that when I go canyon cruising in the west or make it out to a race track I will be able to throw this bike around.
Looks like I need to do a couple of things to get it "ROAD READY"
1) The front seals and forks seem really SOFT or seals worn out but then again I am 225 lbs. What have heavier riders or people done to stiffen up the front ( heavier fork oils, spring rates, etc? ) or a easy way to test the forks seals/ rebound rates?

2) I noticed cleaning the rear shock the bump stop( I assume that what it was conical cone tan colored) was deteriorated so I assume it was the original shock that might also need replacing. Any good ways to test the spring rates or if the shock is bad? I don't see any oils leaking but then again it was sitting for a VERY VERY long time.
QUESTIONS:
- I plan to take this bike with my RV and head to the mountains in the west and run it on some curvy roads. Sometimes with my girlfriend, are there any issues taking a rider we would be combined about 375 lbs.
Had no issue with my GPZ 900 having a rider but didn't know what the "limits" were on this bike. Again my need is not to go on a "long" ride with her on the back of it but we do go an explore or take a ride to dinner on the road.

Looking forward to meeting everyone and figure out what I have!
BTW: Selling the all original stock clean 49k mile 1984 GPZ 900 in the picture I am located in Phoenix AZ.
Thanks,
Eric