I'm sorry but this is a bad idea. Level sync is designed to let you party with your friends at lower levels. It also makes it easier to form parties with a larger range of players at different levels, looking to party.

People take advantage of this by finding/creating a sync character for burns, but that's not the purpose of it. You are supposed to progress through the game (meaning areas, gear, abilities, mobs, etc) as you level up. Experience different zone conditions, monster behaviors, job strategies, party dynamics, etc while you earn EXP. That's what this game is about.

I like soloing here and there too. There are multiple areas suitable for every level range in the game. If you're absolutely in love with EXPing in Valkurm Dunes, party up with a new comer, sync to him/her, and teach them a thing or two while you're at it.