A warm welcome to you, Ed357SIGEly! Don't worry, you won't be a newbie long!
Your question is a toughy...for one, $110 buys a lot of ammo.
But if you say its too heavy, I think you answered your own question, sorta.
If about a half pound or so makes it too heavy, so be it.
The only thing you may not like on the Smith, besides the tiny grips, may be the silvery front sight, integral to the barrel, which disappear under some lighting conditions.
The SP101 has a black one that is removable if damaged.
The hammer is easier to "bob" on the Ruger, as it is stainless, not plated like the Smith.
I have fired almost all the "J" frame Smiths, except for the ladysmiths and never was disappointed. I did have the fired magnum shells get stuck upon extraction on the one of the little Smiths. Hopefully, that won't be the case on yours, if you do choose to swap.