You will not be able to print 66 lines on a laserjet or inkjet printer. This is because there are "unprintable" areas on these type printers. With older dot matrix printers with continuous paper you could just keep printing if you wanted and the lines continued. Actually that will happen in most cases with laserjets too but it will not print in the unprintable portions.
About the most you can hope for is 64 lines at 6LPI using
chr$(27)+"&l6c6d66f0l0o0E"
You can set the LPI to about 84 using 8LPI or other and yes you can set the paper type with PCL.
chr$(27)+"&l#A"
that's ampersand lowercase L and a number
This sets the page size
Values should be:
1=Executive 7.25" x 10.5"
2=Letter 8.5 x 11
3=Legal 8.5 x 14
26=A4 (210mm x 297mm)
80=Monarch (3.875" x 7.5"

81=Commercial (4.125" x 9.5"

90=International DL (110mm x 220mm)
91=International C5 (162mm x 229mm)
There may be more and these may or may not all be supported on your printer - the first 3 should work for sure
Set Page Length
chr$(27)+"&l#P"
Papersize Portrait Landscape
6LPI 8LPI 6LPI 8LPI
Letter 66 88 51 68
Legal 84 112 -- --
A4 70 93 49 66
Executive 63 84 43 58
Left Margin Right Margin Top Margin
EC&a#L EC&a#M EC&l#E
Text Length
EC&l#F
Note: when sending top margin and text lenght send top margin first.
Line Per Inch
EC&l#D
(EC stands for escape character hex 1B dec 27)