Phrag. besseae flavum Fertilizer and Media?

[gdupont]

I got my first true phragmipeidum yesterday when I visited the wonderful Orchids by Marlow, Phragmipedium besseae v. flavum, which seemed like quite a steal at $50 for a remarkably healthy young plant, with a second growth just starting, and almost no blemishes on the leaves. I went out today and bought some fertilizer, Better-Gro Orchid Plus 20-14-13 (No Urea!). Does this sound good for a besseae, dilute to 1/4 teaspon / gallon, once every week in RO water?

Also, it is currently in purely fine bark medium, sitting in a saucer with about 1/4 inch of water. The humidity in my dorm is about 55% and its getting some evening light. I'm thinking of switching it over to a mix of perlite and sphagnum. It's in a black plastic pot. What would you all recommend: stick with the fine bark or switch to sphagnum and perlite? Marlow said he got this plant over the summer and potted it then, he said it shouldn't need to be repotted for about another year.

Finally, the perlite I have is by Miracle-Gro and it says it's "Enriched With Miracle-Gro Plant Food." Would that be bad for the besseae since I've heard they dont like to be fertilized a whole lot, are sensitive to salts, and should be flushed regularly?

Thanks!