Lots of other threads here on the plane. Do a search on Lanier Edge.

Mine is almost complete - need to stretch the cowl out a bit to achieve balance without a lot of lead in the nose. The servos in the tail combined with the light engine kinda pushed the CG back.

I'll try to summarize what I've read and learned and done to mine:

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Issues:
The stock hardware sucks.

The suggested front-mounted elevator servo setup (IMO) is terrible. I tried that before I put the elevator servos in the rear. No way I'd trust that to a 1/4 scale plane - way too sloppy.

Folks seem to be putting OS 160 or Saito 150/180 or YS 120 engines in them.

There really isn't enough room for a Saito 150/180 in there without some work. The firewall is too far forward to allow the standard muffler to fit without it going through the firewall. To enable the 150/180 to fit, you can move the firewall back, bend the manifold, install a flexible muffler or extension, or: I'm moving the cowl and engine 1" further forward. This will address the rear-CG problem as well. It will also require some extra balsa and covering work to fill in the area between the canopy hatch and cowl.

I'm beefing up the firewall with an additional 1/4" plywood glued behind the original firewall. I'll pin the firewall to the fuse sides, as well.

If you install a pull-pull, you will have to remove the covering on the bottom and enlarge the opening in the fuse former at the front of the fin. There's a hole in it which you can run the cables through, but it is WAY too high.

Throw out the supplied fuel tank. You'll need to hog out the former to fit a larger tank. Then you'll need to build supports for it.

Throw out the supplied tail wheel. After a few not-so-perfect landings, it will impale the rudder. I used a Klett. The screw hole spacing is the same.

Watch out that you get a real plywood landing gear support plate. Some early models were shipped with two 1/8" lite ply plates glued together there. The LG bolts will pull right through it. Mine has real plywood there. I'm installing fender washers to keep the bolts from pulling through anyway.

Many people are installing carbon fiber LG. Some of the stock landing gear shipped are really weak and collapse. Mine seems strong enough - looks like Lanier addressed this problem.
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I used a Hitec 645MG with DuBro 4-40 pull-pull on the rudder and 225BB's rear-mounted on the elevator halves (needed to build a smaller support plate for the smaller 225's). Standard servos are strong enough for the ailerons unless you want to fly it really fast, then you'll need some more torque.

Word is, flies great - really stable at low speed. I'll find out in a couple months when it's finished.