As noted in the recapping article, with electrolytics it's often OK to go up to the next common higher capacitance value. For instance, if the original cap is 18 mfd (an oddball value), then you can use 22 mfd (a common value).
Same deal with voltage rating. It's OK to go somewhat higher. For instance, if the original cap is rated for 160V, then you can use one rated 250V.
I don't know where you're looking on Mouser, but electrolytics are generally a few dollars each. Another good supplier is
http://www.justradios.com/ , located in Canada.
If you look at their listings of what's available, you'll get an idea of what is a common value and what is not. 160 mfd is not very often used nowadays. To get that value, you could combine, say, 100 mfd and 68 mfd in parallel (again, read the article). You could also bump up to 220 mfd if that's the nearest common value.
Yes, color TVs are complex and it may take you a while to learn your way around that chassis and schematic. I don't count the hours I spend in a restoration because I do it for fun. Realistically, this is not something you can expect to polish off in one evening.
So, I would relax, take my time, and enjoy the process of bringing a great old TV back to life.
Regards,
Phil Nelson
Phil's Old Radios
http://antiqueradio.org/index.html