Go with the Explorer UL, you'll enjoy the extra space. I'm 6 foot and about 180. I've slept in my son's Expedition and they're just a bit cramped for me. The difference in weight between the two is negligible so go with more room.
I use the round reinforcement patch on the bottom entry as my reference spot. I put my bottom right on that and then wiggle around to get myself as diagonal as I can stand. Yes, the netting ends up a little close to your face on the left side. You need to be a little cautious not to put your arm up against the netting since the little bloodsuckers can bite through it (and the fabric in fact). Other than that, I love it.
I did the zipper mod to my Explorer a couple of years ago. It's like a new hammock. I haven't used the bottom entry since but it's nice to have it just in case I need to make a quick exit or the zipper jams (belt and suspenders I guess). 2QZQ do great work and the price is very reasonable. The end product is much nicer than the factory HH zipper. The zipper entry does make negotiating getting into a sleeping bag a little easier. There are some videos here somewhere but basically you hop into the bag while standing on your little tyvek mat, zip it up to your waist, then sit back into the hammock. That's the best way I've found, YMMV.