Temperature Problem

Hi there,
I'm here to learn how to grow, and make no mistake i am a complete newbie at this, but am very willing to learn from anyone that can help me

Basically, i was wondering how well Super Silver Haze would grow in conditions of 3-5 degrees celsious, but it would be completely frost free. It's in a cabin of mine, that i can't afford to heat properly, so it would stay at a rough temperature of 3-5, but it is insulated so there is no chance of frost or freezing inside the cabin.

I'm using 125w Blue CFL light for the veg stage, and 250w Red CFL for flowering stage, running on a budget you see

I'm growing Super Silver Haze, how many plants can these lights support in one grow?
What height could i expect?
And what would these plants yield?
+ Watering, what is the maximum time a plant can go without water? (Work commitments)

Thanks for any help

at that temp,it wont grow.
in a small box with both lights, the heat they put off may be able to keep the box warm enough.
at 10-15 degrees, you could keep a couple plants alive for weeks if needed but you would see very little if any growth.
at 15-20 degrees, you will get a little growth but you really need to get at least 20-25 degrees to be worth your time.
no way around it, you are going to have to spend some money. a small electric heater can be found used for $10(US) and won't cost alot if its heating a small insulated box. for the size of your lights,you will only be able to do 2-3 plants so a box the size of a small fridge would be plenty.
as for watering,seedling will need to be checked at least 1x a day but depending on your soil,you could go for several days between watering for an established garden.