I have  $140,000 in my tsp account and probably another 17 years before I retire.  I am definitely a newbie to investing.  I am now putting 15% into my tsp account.  I like the tax advantage of the roth as a supplement to my tsp, but if I start a roth it would only be with $500 and probably $150 added each month.  It just seems like I would come out more ahead by putting 20% into my tsp because it already has such a large balance instead of the roth.
Any opinions?
				
			Any opinions?