Longer drying time
2 thin coats are better than 1 thick coat. You might get uneven drying, but it kinda depends on the time between coats. A few hours on the back end isn't going to hurt anything, but if you put on one coat, wait a couple hours to where you can touch it and put on the second, you may have problems. Interlux is a good product with a good track record when applied according to spec. I use Interlux Ultra and it works great for me, but I wait a day between coats.