This is what I came up with.
OME CRD kit $1100 that will give you about 2" of lift.
Regearing. I don't know how much it costs these days. If you can do it yourself you can save a lot of money. The last re-gear I did was in 2007, 94 Dodge 2500 diesel, about $5k. That included 4.56 r&ps, Powerlocs, front and rear.
33" Tires just for grins, $500 (cheap MTs) including spare. I would go with the narrowest you can find that will fit on the factory wheels that are not E rated.
Sawzall and blades, $150 to cut out the wheel wells so the tires will fit. Extra $$ if you want it to look good.
So $6750?