leopard gecko rack system?

i have a shelving unit that is very tall, about 2 feet wide, and one foot deep. it can comfortably fit a ten gallon on a shelf. i want to convert this to a rack as cheap as possible. i have an opportunity to buy 7 designer geckos for 200...its a good deal, but thats alot of money (for me) so this rack has to be bare basics. now, i know i control the heat with a thermostat, or a dimmer, isnt there a probe i need to put somewhere? where would i put it? also, how would i thread the heat tape or cord into this shelving system? like i said, its not very deep, so if i did it in the back, there wouldnt be much of a variation, could i do it on the left or right side somehow? i know they prefer belly heat, but what if i ran the tape up the left side wall? but wouldnt the heat escape? gah!!! i need help i also need to make this in a week...

Belly heat is a must with leos! It helps them digest. As far as how to convert it, I don't have any suggestions seeing as all of ours are in premade racks. Gecko forums.net would probably be a better place to ask!

From what I gather, rack systems ate complicated and for experienced Leo keepers only. I hope you know house each one in its own house?

Here's a link to an awesome gecko forum, loads of great ideas and money saving tips http://theleopardgeckoforum.com/index.php

Btw, if you get these geckos we will want to see pics of the cute little guys

ive tried both of those forums, none have helped :/ either nobody answers, or they give me rude inconsiderate answers and dont worry, i was planning on keeping them seperately, thats why i want a rack and not to keep buying tanks... and will deff post pics

heres some pics and morphs of 5 of the seven geckos that im trying to get:

Giant Tremper het Raptor(male)


Mack Snow Fasciolatus (in shed)


Mack Snow Raptor


Mack Snow


Tremper het Raptor


and theres also an adult female and baby eclipse that he didnt send me pics of. can anyone give me a guess as to what this group is worth and if his morphology seems correct?