3 or 4 day program?

All,
Thank you for providing this resource, it is of great help to a great many lifters. 

I am returning from Achilles tendon surgery and for the past 12 weeks have been following this bench only program

found here: http://sheiko-program.ru/forum/index.php?topic=272.0   

Over the past month, as I have gotten stronger and mobility has returned to my injured foot, I have started deadlifting and squatting.  2x's a week for each lift (mostly pause lifts to make sure I am in the right places, and sets of 3-5 reps to drill technique).  I am with in 30 lbs of my PR's in the Dead and Squat.     

On a side note I have become quite accustomed to benching 4x's a week, and the addition of Squats and Deadlifts hasn't hurt my recovery.     

Now I want to return to a full program when I am finished with the bench only, should I go with the Advanced medium Load prep 1 (what the app recommended)  or start the 3 day over 80kg programs?  My last total was a 1170lb at 215lbs, which was lifted a few days prior to my surgery.

Thanks in advance
Will         

I would run the advanced medium load program in your position. Obviously you need to be mindful of your injury and ensure that it doesn't reoccur.

Thanks for the input, I will give the program a run to see how I handle doing a full program vs one that is bench only with less squats than normal. 

I have trouble understanding why a 4 day program would be better for someone who isn't very advanced (i.e below 1200 total at my weight). 

What advantage does a 4 day program have over say the medium or  large load prep cycles I, and II?  I know that one has more concentrated loading and one is better for lifters of a higher qualification, but I feel that I have room to grow into so may a 3 day program be a better choice?  I have always been a person who questions everything...  Maybe I should just go do...   

 Thank you for your input!   
Will

If you look at the raw classification chart in this forum I believe your total is such that you could do either the 3 or 4 day program.

If you haven't used Sheiko before there is no harm in starting with a lower volume and working your way up, Sheiko has recommended to train 4 days a week because the higher frequency helps technique work more than 3 days a week.

My total is similar to yours at a slightly lighter body weight, and I'm just moving onto the 4 day program, but I have ran 3 Sheiko programs prior to this, and I'm not coming off an injury.

It's really your call on what the best idea is.