It may sound like a stretch, but a shotgun mic may be the best for you. You can position it further from the source than a conventional mic and it will pick up very well. I've sold many to HS choirs and theatre groups.
The condenser will always be a hotter signal than a dynamic mic, so the preamp IS a vital difference in the gain structure.
I use a Mackie 1604VLZpro in my studio, and I fing the mic pre's to be excellent. There are 16 on the newest models too.
A lavaleir will never give you the same gain because of the "omni" pattern. It'll feedback way before the signal is as hot as a mic , closer to the mouth.
I'd try a C1000s before you do anything else. TYhey are so versitile in the studio, and they have a tighter pattern than the C3000 and the TLM103. It's a smaller diaphragm, and a good hot output.