ORIGINAL: Steve Campbell
You don't need dual elevator servos, unless you just want them. They will add a bit of complexity to a relatively simple build, but again, that's fine if you don't mind.
With that relatively light engine, don't be tempted to put any servos in the tail. My Laser 150 weighs 31 ounces with muffler, and I still have my battery almost three inches behind the servos. If the kit still comes with the 5/32 wire gear legs, that usually works out a bit heavier than a simple one-piece aluminum dural gear.
This model is very forgiving, both in the building/set-up and flying. It has one major vice; power-off glide resembles a falling cinder block. You have very little time to putz around with a dead-stick. But it lands as docilely as a trainer when the wing incidences are right. And it will get positively ignorant with high throw rates. It is one of the best all-around models I've owned in the almost 20 years in the hobby. I'm on my second one, and plan to build a third, as the current one is getting long in the tooth.
I would leave the fuselage lightening knock-outs over the lower wing saddle in place; glue 'em in. I have seen a couple of Ulties crack there on hard landings.
Dump that Sullivan tail wheel and get a Klett unit; looks better and is MUCH more durable. You'll probably have to order direct from Klett in Texas, but its worth it.
I'll post a photo of mine tonight if you have trouble finding one; I think they still have a web site.
I read a lot of interesting posts about the split elevator set up on the Ultimate & it seemd as though several people had issues with getting both pushrod's set up exactly the same & it would cause stability issues during aerobatics. Maybe I'll just try it with 1, & if I have issues, it should be easy enough to upgrade it after the fact.
I would be interested in the tailwheel pictures, it looks a little more scale than the sullivan in the pictures I found. I'm not trying to build a scale Ultimate, but hey, if it looks better.
Thanks for the other tips!
Tony