There aren't many solos build for bigger guys. The larger amongst us tend to sit to remove pressure on the knees but compromising stability and control. Foot pegs/braces help but we need hulls wider than 30" with tumblehome to reach the water while sitting. The sitting position also compromises control, so bigger guys need differential rocker, less in the stern to track and more in the bow to turn. Few solo canoes meet these criteria, and, of course, we'd prefer composite for lower weight and greater efficiency.
The lamented Bell Rockstar, 15'5" by 31" with 2.5/1.5 differential rocker was made in composite and RX. Try to find one.
Colden has pulled in Starfire, differentially, to narrow the hull to 15'X32" and generate differential rocker. Composite and top of market.
Hemlock pulls in Eaglet to 15'X31.5", rocker remains symmetrical. Composite
Mohawk's solo 14, 14' X 31" had less symmetrical rocker, not stellar but workable and only in RX. Inexpensive, but maybe hard to find with the end of RX upon us
NorthStar's new NorthWind Solo is 15.5 X 30", a little narrow with differential rocker; composite only.
Swift's Shearwater is 16.2' X31" with differential rocker, composite only.
One might include Swift's RX Raven, 15'3"X 32" but it's huge with too much rocker for OP's intensions. and a very heavy 60 lbs.
WeNoNah's Wilderness is 15'4" X 30.5 with minimal rocker, composite or RX. Extreme stem layout shortens waterline length to nearer 14-14.5 ft.
So there's the range, depending on where the OP lives some will be ~unavailable as they come from beautique shops; only three are from major builders and one of those has been closed for a while. Worse, only four meet our best design criteria and one of those is narrow. So it goes.