ok ....your tent is very very very small if i am doing the convertion right
1x1x2.6 ft
that is very very very small..............the light is going to hang off the top lose 6 inches the planter with the dirt will be 10 to 12 inches tall this leaves u 1 foot of room to grow into (and u need to take 4 inches off that for open space for the light to have open area )
u really should get something larger (i know u did not account for those numbers i did the same thing myself with a grow box)
http://www.amazon.co.uk/Secret-Jardin-Dark-Room-Rev2-5/dp/B00IF726XE/ref=sr_1_1?ie=UTF8&qid=1429908875&sr=8-1&keywords=dr 90
this is a good tent i own one 3x3x5 u are able to do what u want and have the room for the gear
as for your light auto flowers
http://www.amazon.co.uk/Popular-Hydroponic-spectrum-100pcs-AC64-285V/dp/B00E5WTYZ6/ref=pd_sim_sbs_lp_9?ie=UTF8&refRID=1S48Q71X9Y9EXH6C3PS3
this is a generic LED i use one like this for my autos it will do u great in the tent
venting for this u can use a simple 4 inch fan
http://www.amazon.co.uk/Carbon-Filter-Black-Orchid-Small/dp/B00LAEPQEU/ref=pd_sim_sbs_lp_2?ie=UTF8&refRID=1HRZT3RABMNYQ5YRDZ37
basically all u need is there ........just take a flap off the side of the tent it will make negative air pressure keeping the smell in the tent until door is open )
planter sizes ......i use fabric pot (soil bags/smart bag/smart planter/grow bags)
120 grams and under plant can go in 3 gallon bags
121 gram and over should go into a 7 gallon bags
as for the soil your in a different market for then USA but good soils
Fox farms Ocean Forest
Roots Organic (anything but 707)
those are feeding soils to get the best out of your plant ..........u are new and starting here is a organic kit ( all in one buy)
http://www.amazon.co.uk/GHE-GO-Box/dp/B00DE87JM2/ref=sr_1_1?s=outdoors&ie=UTF8&qid=1429909627&sr=1-1&keywords=go box
full feed line will do several plants for u .........u should order pipettes to use to mix the feed up 1 ml and 3 ml i got 500 count of each still using them 2 years later
u need to feed the plant unless u are using super soil ( super soil is something mixed up with everything the plant is going to need for whole life but u have to make your own or order some from ideal420soil.com)
just type in super soil and u will find it on the here how to mix up Subcool's super soil
this set up will make u one great plant .........sorry it was not as cheap as u wanted but u forgot to account for those factors if u do not upgrade the best u are looking at is 1 plant giving u maybe 14 grams in 78 days ..........this set up should get u 4 to 8 oz per plant ( first time 2 oz or so once u learn to feed it and read the plant/strain the amounts increase)
