I'm sorry if this comes out kind of mean, but, "Grow some balls!"
You think that after a year of training, the gains of which no longer exist might I add, you're ready to juice? I think not my friend.
If you want to put on some serious weight it will take effort and it will not be fun. You're going to have to work out like a demon and eat like a fat kid in a candy store. I put on thirty pounds of muscle during my first 4 months of training, and it was all through hard work and force feeding.
Okay, now that I'm done ranting, here's my advice on how to go about gaining weight...the legal and non-pussy way.
For your routine, lift lower body twice a week. On both days, do 20 rep breathing squats with your 10 rep max. It is imperative you add weight to the bar every workout. Also, do some RDLs or Stiff Legged deads for your hams. For the upper body, also go 2 days a week. Do whatever, but I'd suggest doing 10x3 for bench press and rows one day, with some assistance work, and 3-4x10 on the other day with extra assistance work.
For eating, read the article Massive Eating, on this site. Find your recommended calories for weight gaining and add another 500 to that. Get at least 1.5-2 grams of protein per pound of bodyweight and drink 1.5-2 gallons of water a day. You'll feel sick from eating so much, but you'll gain weight.
So, that's the plan, plain and simple. But if you follow it, I guarantee weight gain like you've never seen before. And a note, if you're not gasping for air and seeing stars at the end of your set of 20 rep squats, then you're not going heavy enough.
Now go and do some hard work before asking about Test, you'll thank me later.