How many plants could I get in his cabinet?

I found a nice cabinet online for a good deal, but before I pick it up can any one tell me how many plants I could have in here and how many I should have in here. Here is the link to the page http://www.lowes.com/pd_19493-1281-KB3014WM_4294857685+4294965809_4294937087_?productId=3307646&Ns=p_product_price|0&pl=1&currentURL=/pl_Metal_4294857685+4294965809_4294937087_?Ns=p_product_price|0&facetInfo=Metal&stop_mobi=yes sorry I couldn't use the link maker, I'm using my iPod

Thats a complicated question, what strain are you planning on growing? what medium are you using (soil, dwc, etc)? what method of growing would you like to use (LST, SCRog, SOG, etc) all of these have a role in the number of plants that you can put into a space. You will have trouble sealing it light tight with the dual doors, and you will have to modify it for ventilation, power, lights, mylar, etc. But if your willing to do this then yes yo can grow pot in this.

I suggest that you do a Google search for 'grow tent' or 'grow box'on amazon.com. You might find a more suitable solution for less money take into consideration everything tht you are going to have to buy to make this cabinet work, as well as your time.

I'm planning on doing an Lst grow for this and I'm gonna be growing either some white widow, sour or purple haze

a haze is too tall for 2.5 feet tall. you are looking at autos and nothing else unlesss you grow one plant and LST it all over the inside.

Go down the aisle to plumbing and get some 1/2" pvc pipe and connectors and make your own cabinet out of PVC pipe and tape Panda Film on the outside to keep it leak proof....you will save sooo much money,

I would think twice about how you are going to drill holes for venting, tubing etc since its metal case. I like the case it looks very nice and durable but I would also worry about rust since its metal and will be exposed to humidity and water.

You need a good strain mixed with Ruderalis or what most call auto flowering. Ruderalis has no specific flower time it flowers when it wants too and is not tricked by traditional 12/12 lighting. Thats why seed companies make indica/sativa mixed with ruderalis and make what they call Auto Flowering plants. Ruderalis is the mystery marijuana no one really likes lol people just use it too breed autoflower strains and smaller plants.

Google Ruderalis its crazy for years I thought theres was 2 kinds of marijuana sativa and indica but there is 3 indeed RUDERALIS !~ hehe

Best of Luck
https://www.rollitup.org/grow-journals/384835-swiftgrow-journal.html