Sheal,
I'm doing the same thing. I live in North Carolina, where it gets just borderline too cold for lemons during the winter. I have an Eureka lemon tree in a large pot that I move indoors for winter.
I have two main questions for you,
1) Do you have any tips for keeping the tree healthy in the winter?
ie. supplemental light, keeping it away from cold drafts indoors, etc. Last winter, my tree stayed alive, but it lost a bunch of leaves lost a bit of its natural luster.
2) Do you have any tips for promoting flowering and fruiting?
I haven't seen any flowers yet, even though they are technically supposed to be able to flower all year round. Do you use a specific fertilizer? Or how much sun and water do you provide? Some plants only flower when they receive a specific number of nighttime hours. And/or do you know how old (approximately) your tree is? Maybe mine is just a little too young still.
Thanks! I wish you the best with your lemon tree!