Help With Setting Up Float Rig

Boat winterized for the year so I'll be turning to some river fishing. Theres a river right beside me thats open until dec 31 for browns, salmon, rainbow.

I know an old friend use to do some fishing there and has caught some nice steel out of this section of river. Its a lake ontario tributary.

I have a float reel and rod all setup that id like to play with but I'm not too sure on shot placement and tippet lengths.

I usually fish with the fly rod but I know theyre much more willing to take roe in this area.

If the float reel becomes too frustrating for me being a first timer I'll have a spinning setup as back up on me.

Any tips are appreciated.

Thanks!