2000 SS- get the following codes:

P0121- Throttle Position Sensor A Circuit, Range Performance (going to replace tps today)
P0134- O2S Circuit, Bank 1-Sensor 2, No activity detected (bad?)
P0155- O2S Heater Circuit, Bank2- Sensor 1, Malfunction (bad?)
P0300- Random-Multiple Cyl. Misfire Detected (probably due to cam)
P1637- Generator-L-Terminal Ckt. (dunno???)

My car idles just fine, stutters/bogs like a bitch when I accelerate out of any gear.

swapped out the TPS which was easy as hell, unfortunately it didnt work.
Monitoring the data, at idle, the mV for the 02 is as follows:

Bank1- Sensor 2- 700-850mV
Bank2- Sensor 1- 700-850mV

When I hit the gas, they go down to:
Bank1- Sensor 2- 0mV
Bank2- Sensor 1- 0-50mV

I'm guessing its time to replace o2's?
Any special tools needed? Can someone like me with limited knowledge possibly do this?
Also I've read where it was recommended to use Corvette 02's since they are "longer" ???