If this is for home archival I'd get the regular silver Taiyo Yuden and forego the printable ones. They do last little bit longer in theory (see also
http://adterrasperaspera.com/blog/2006/10/30/how-to-choose-cddvd-archival-m.... Taiyo Yuden does produce DL silver ones but haven't seen them for sale in the US unfortunately (except ebay I believe).
I agree use 2 pass VBR and limit to 8000 kb/s. The min and max bitrates are not an exact science but I'd typically avoid lower bit rates than 4000kb/s for min to avoid visible compression artifacts in any scene.
For max I typically add 50% of the average bitrate to avoid pulling down quality too much in other scenes but that solely depends on the source material (e.g. mix of scenes complexity).
If you source material is higher resolution than I'd prefer tmpgenc xpress since its downscaling algorithm is definitely better (I did a test last year with all methods and never could match it). Otherwise Vegas will do the job just fine.
