What problems? I heard that the intel 510 was more reliable than crucial M4 with the mac
The Intel 510 came out at the same time the early 2011 Macbook Pros did and this was the first Mac to have SATA III and the Intel 510 was the first Intel SSD with SATA III, so I think a lot of people jumped on that combination.
There was a fairly long thread here about people having beach balls etc with that setup, but the EFI (firmware) updates Apple released for that model Macbook Pro seemed to fix the problems the Intel 510 as well as other SATA III drives were having. Since the EFI updates I have not seen posts from users having trouble with the Intel 510.
Around the same time period there were threads discussing troubles with about every brand SATA III SSD you could buy, and they all seemed to kind of go away after the EFI updates.
----------
I haven't opened up my new 15" MBP as yet, and I plan on ordering a 256 GB SSD tonight to put in it. Is the best way to go about this simply to wait until I get it to start up the system and install everything? Or should I boot up now and then switch over when the drive arrives?
Also, at the risk of asking a question that's been asked already, where can I get the hardware to allow me to use the Superdrive bay for the original HDD?
I would use your machine now with the factory drive so if anything is wrong there won't be any issue with Apple saying it is caused by the SSD you installed. It won't really complicate your SSD install, you can just clone your data over to the new SSD.
Search for "Optibay" for the mounting bracket you want. I don't know which is best as I have not used this setup. There are other brands also you will see discussed if you search for that term.