I love the silver falls waterfalls! :) I would highly recommend doing the full loop! :) I too only made it to the first couple on my first visit, but was motivated to go back earlier! It is quite a trek from Portland, so you've gotta get a pretty early start.. It is sooooo worth it though! The further your go on the trail, the less people are around and the more you can connect with the nature around :) the creek is absolutely beautiful and there is waterfall after waterfall! Looks like a great trip though!