I would recommend the standard height. I'm 5'10" with a 31" inseam and the height is no problem on my standard GS. Plus, you will have a little more leg room from the seat to the pegs which is more comfortable on a long ride.
This is completely false. People should really avoid giving advice when they don't know the facts, and opinions are not facts.
Just to help all other people in search for information on this topic.
1. GS is lower then GSA in regular suspension about 1" ground to seat (0.8" of ground clearance).
GS have option of sport suspension to get to the same ground clearance.
2. Low suspension GSA is little under 2" lower then regular and about 1" lower then regular GS.
3. If both, GS and GSA have been factory lowered, they have same ground clearance and suspension (and mandatory Dynamic ESA), seat height is almost the same.
4. Low suspension DO NOT alter peg to seat distance, riding triangle remains the same!
Lower seat does change that, makes triangle smaller and less comfortable.
So, if you're chasing maximum comfort for your legs, rather use low suspension and high seat to maximize seating triangle geometry.
Having regular suspension and low seat is directly opposite and will yield least leg room while seating.
5. Spring rate is same for regular and low suspension, but low suspension will have less travel, so it will firm up faster (actually a good thing for on road sporty ride). Also motorcycle center of mass of sprung weight is getting lowered. Those things are positive. Negative is that ground clearance is reduced if that is of concern (also maximum lean angle before pegs scrape).
Finally, most people can't even tell the difference, set suspension to automatic preload and same damper (road or dynamic) and they wouldn't manage to tell them apart.
Meaning, all those differences are only important when you ride it at motorcycle limits. If you are that good rider (on or off road), you probably don't even need to read this topic.
For the rest, you can't go wrong with either, but you can go wrong with ergonomic seating triangle and confidence to be able to flat foot.
Both are individual, but those are only two things that you will truly feel (if you don't trust me, just blind test low and regular suspension at same settings, and you will see for yourself).