Poor Richard...
Since you so sarcastically asked... I suggest you get an accurate weight on your boat and set the trailer up accordingly. According to SeaRay (those smart people who built your boat)...
The dry weight of your boat is 5425lbs
Fuel tank 100 gals (6lb/gal) = 600lbs
Water Tank 24 gals (8lb/gal) = 200lbs
Misc Boat Stuff (lifejackets/coolers etc)= 275lbs - this is a stretch!
Total weight of Boat = 6500lbs
If you spring your trailer for 7000lbs - 7500lbs you will be right where you want to be. 9000lb springs are not only overkill, they are potentially dangerous as the suspension will have no give.... Make sure you check the tongue weight with the new springs and adjust the boat position on the trailer accordingly. (This assumes your current trailer is actually rated for the weight of the boat - check the title)
Here is the link to the SeaRay data sheet...
https://www.searay.com/www.searay.co...DERNKGJ526.pdf
Woodsy