Digital BW, The Print

I start to use UT-3d with my 2100 about 3 months ago. Before I used 
an 1160 with a set of UT-FSN with piezo plug-in. The results are 
very nice prints, with a more three-dimensional  effect respect the 
previous system.
Still today I used only HPR but now I want to try some different 
papers. I need the Epson archival matte for economical test prints 
and want to try with a semi gloss paper.
If I have understand the better way is to prepare profile by myself, 
so the profile with consider the exact printer/paper couple.
I see the Paul instructions but probably I haven't understood 
everything...
1 - I can use a curve to linearizing a print ramp from black to 
white (using a good scanner or a densitometer/ spectro). But how can 
I control the tone of my print?
2 - which difference if I use only the L value or all the L+a+b 
value?
3 - with the new printfix pro 2.0 is possible to create profile 
directly also for a UT-3D set? Is a good solution or I can do better 
with QTR create ICC ?
4 - the printfix pro 2.0 will work also with the old printfix or 
only with the printfix pro?

Marco - Italy

PS: sorry if my english is not so good.