I wanted to post an article about getting back into training but couldn't find it.
The jist of the article is to time your rest periods and keep the rest period short at first, ie 30sec in between sets. As you get back into the swing of things and your strength comes back you will need to increase your rest periods since your CNS is being taxed more.
Your progression could be:
Lighter weights, 10-12 reps, lower rest periods (for 4 weeks to get back into things)
moderate wights, 6-8 reps, moderate rest (maybe 2 weeks)
High weight, 3-5 reps, Longer rest
Ultimately ^this^ would lead to working with a 5/3/1 type program (Don't know much about size and strength 2.0)