Well the final decision is up to you. If you are growing in an apartment there are a few things you need to remember. Some times digital ballasts will knock out internet access in the building. The ballast create interference with the cable internet signal and knock it out when the ballast comes on. Not fun when it happens and the cable company wants to know why there's tons of noise on the line from your suite. Telling them you're "testing a new aquarium ballast" worked last time for a buddy of mine
Noise from a Vortex 6"+ like fan can get loud when night time comes so best to put up a blanket on the side of the tent that faces a wall to a different suite.
High humidity kills charcoal filter efficiency and sometimes you don't notice the smell but others could.
If this is in a house/condo put it in the basement and enjoy the fruits of your labour just get an oversized charcoal filter. You can vent back in the house instead of outside. The amount of humidity for one/two lights it wont make any difference in the house.
If you're looking for a timer don't use the Intermatic or other make Heady Duty timers. Try to get something like this
http://www.superprohydroponics.eu/admin/upld-folder/CRL-1.jpg has had built in breaker and high heat shutoff switch. They should be around $170 CDN. I've used this one before but I've also used this one too
http://growgps.com/products/mdt4/ which was pretty nice and lasted me like 4 years till I gave it to someone else.
If you can't get those timers check out the Gavita E ballasts which can be controlled by a timer module which will turn the ballasts on and off, control the amount of power output at start up time and dim/shut the lights off when it gets too hot in the room.