Put a reverse tie on the 3rd tier(along with regular tie on the 5th) and your stacks will stand even better.  Load 6 bales on second table then raise table to move bales to back, then make a tie for the reverse tie.. 103 per load and 2 loads per hour to hayshed with field within half of a mile from shed. Man, makes me love my round baler, thinking about how we used to do all small squares.

I've had a couple.....1032..1033...1063..1069..1089.. Best day was over 10,000 bales, 4  loads a hr with the 1069 stacking on end of field, go down & about 1/2 way back & head for stack, picking in LOW gear to get the tables to cycle fast enough. Got started early & ran late.

Not hard to get 3 loads a hr if close. Normal to get 3500-5000 in a good day.  The 69 will out stack the 89 in heavy hay because you can get the RPMs higher with the 5 spd. 

Where are you located? My sister-in-law has a self propelled NH bale wagon in her barn that my brother refurbished and then used only two or three years before he died. He was very meticulous about service and upkeep on his equipment so I'm sure it's in pretty decent shape. Email is good if you're interested.