I had both of mine completely rupture in Feb 2010 (bi lateral) I had 2 full leg casts for the same period of time you will. If you get a good repair its not the end of the world. I snapped mine at the same time squatting, only 405 lbs. I had already done 3 sets of 8, not even to failure, 4th set about 5th rep as I was coming out of the bottom they both popped and I crashed straight down, thank Godi had the safety bars in the rack. 405 was not a ton to me, I've done as much as 575-600 for sets of 4 about 5 years prior. Doc was puzzled why 405 would do that, later I found out the antibiotic Levaquin I'd been taking causes tendon weakening, and the theory is that and the cortisone shots I had about 2 weeks prior contributed to the weakening.
I was back squatting 225 a year later, competed in bbing in August 2011. Quads weren't what they were before, but actually prior to the injury they over powered my upper body a good bit. I have not squatted more than 365 since then, usually rep with 225 and lots of recumbent bike.
It is a bitch but just do your therapy and don't rush things and you should be fine.