Hello,
Good day,
I would keep the Mosley and Cushcraft antennas and refurbish them,
get some new good grade coaxial cable,you will not find a better made
antenna then Mosley,you could up-grade the 6 mtr antenna to a larger
one with more gain -save a lot of $$$ and hassle due to the moving parts
in the Stepper IR,my friend down the road had the 6 ele stepper IR ant
up for 2 yrs,it now sits in a pile next to his garage-the motors shorted
out,the elememts froze up/broke -they should test those antennas next
to Lake Superior

.for 2 yrs.not saying they are bad,but the Big Lake
Never is calm or forgiving-those moving parts will give you )*&$##@@!!
Good luck and DX.
Paul-K8PG