Nope, I did not have space for colonial ideas at all, since I picked 4 Military ideas. And If you're going for a expansionistic game and plan on using client states, Influence ideas must be your first pick. +25% income from vassals(Applies to clients), -25% diplo annex cost and -20% AE makes your early game so much easier. Added with the -10% AE from Prussian traditions it was insane how much I could expand without going over 50 AE with more than 3 or 4 nations. I annexed Greater Poland ( 6 provinces, about 90 development when I took the mission) with a Conquest CB for 52 AE with poland itself. Never had a single coalition in this campaign. But still had to hold myself in the HRE. Double AE is killer.
Funny thing is, if I had time to annex Spain, I would have 3 colonial nations.
Always go Influence when in Western Europe these days - it's simply amazing. That and Religious used to be my opening gambit with Defensive/Quantity next, but this time I wen with Humanism instead of Religious and OMG. Instafavourite for HRE - stacked boni mean practically no rebels ever, no Religious turmoil and 25% RU is very very tasty. My main issue was overestimating the power of Poland + Lithuania + Novgorodian Russia vs me, Austria and Mega France and slowing myself down by about 30 years. Ah well, was my first successful Ironman run anyway, will upload as soon as it's ready. Will know better for my inevitable Blobban Blobbich Blobbanov run as Muscovy.