Good on you. You can't go far wrong with that stuff. Next thing to consider, is the track geometry, by that, I mean mainly curve radius. The general advice given, is usually for the largest possible radius. Good advice, but don't dismiss the basic LGB track that comes in the sets, and is called R1. Most, if not all, LGB stock is designed to run on track this tight. It is also handy if you are strapped for space, and best of all, it is the cheapest. Often, R1 curves can be picked up on the second hand market. As for turnouts, you should match those with whatever curve radius you choose.... don't go slapping in R1 turnouts, when your ordinary track is R3 or R5 etc. Rough rule, the bigger the radius, the more expensive the track.
Check out my thread on Taita Gorge Railway to see what is possible with an all R1 set up.