Hi Don Juan,
I'm awaiting delivery of my Fat Boy Special soon. Let me assure you that the weight of the bike is not a problem unless you happen to over-centre the bike. Then, even the strongest jock would not be able to hold it up. Just dampen the drop if this happens but be careful not to pull a muscle.
Your height is of great advantage for soft tail handling. I'm currently riding a Dragstar 1100A which weighs 370kg dry! I'm 1.6m short! The Harley is larger but so long as no overcentring occurs, which should not if you are careful, you will face no problems with the soft tail.
ALL THE BEST!