'Coralcole' not very inspiring out of bloom, with some leaf disease problems in addition to the foliage being dull-looking. Am seeing spots on opening leaves of 'Lollizam' at outlets here also - scab (if that's what it is) is prevalent in my area, if a cultivar is not resistant it is liable to be a bust. The "zam" in 'Lollizam' (Lollipop is a selling name) is from Zampini of Lake County [wholesale only] Nursery, Perry, OH. They have a whole series of dwarf flowering crabapple trees. Although 'Lollizam' is all I am noticing at outlets here, maybe another one of their introductions is on the retail market back there - or will be next year.

I pruned my Kouza dogwood over the course of its first 4 years (or so) to open up the interior and remove any crossing branches. This pruning created a well shaped tree, now 20 years later. Yes, remove the lower branches so it is not bushy, if you do not want bushy. Also, envision what it will look like as it matures with the branches you have and want to keep. Remember not to remove more than 20% or the branches in any given year so as not to stress the tree. There are good resources on "young tree training/pruning" which illustrate where to make pruning cuts, shaping a tree properly. Also, prune your tree for the location (such as removing branches which may grow to touch the house).

Casey, great close up of a flower I have never seen before! Vetaal, neat perspective! One of my favorite crabapple tree blossoms photos that I have taken this year.

Yes. Crabs - and pretty much any crab - are excellent apple pollinators. As long as the bloom times coincide.