May I ask a Toyota transmission question please??

I have a 96 Toyota Camry V-6 wagon with automatic transmission, 146,000 miles. It was my parents', meticulously maintained by a Toyota dealership. In the last year, I have had to repair rack and pinion leak and now have a big transmission fluid leak from O-rings on front of transmission. I am going to replace all seals and gaskets on the front of transmission while I'm at it (e.g., seal around pump), but repair person proposed rebuilding entire transmission at same time as proactive repair while the transmission is out. Friction material from clutch wear is evident in pan (do I have that right) although I don't think anything alarming. I need to get another 50,000+ miles out of this car, but rebuilding transmission would double the price of this repair, to about $2300. Is this a wise preventive measure, totally unnecessary, or am I just better off gambling that it will be ok for a long time to come? I need to make this decision by tomorrow morning so please advise. I do not see much on the web to suggest that 96 Camrys have a history of transmission problems.

Thanks, Jane

Ray O wrote:

It is difficult to estimate the remaining life on a transmission, but an additional 50,000 miles would put the original transmission at 200,000 miles. Depending on how the vehicle has been driven, that may be at the end of its useful life without a rebuild. Find out what kind of warranty you get for the $2,300 and how much a remanufactured transmission is. If the warranty is decent and if whoever is doing the work is competent, then you should be able to easily get another 150,000 miles after the rebuild.