Should I pull the trigger??

Hey all, I currently drive a 2009 BMW 328 XI Coupe. Just has premium and cold package so is pretty basic. I really love the new X1 and was planning to custom order one!! My only drawback is i have not seen the car in person or driven one, but my dealership is taking orders now and i am just so tempted to get one! We want the X1 because we need the towing capacity and the dealership said the X1 should be rated at 2,500 pounds (we need to tow a scamp trailer that weights 1,500 pounds).

This is what i was looing at
28i AWD
Valencia Orange Exterior
Ultimate Package (premium, nav, parking)
Lighting Package
HK Sound upgrade
Sirius Radio
BMW Apps
Heated Seats

Now where i am running into problems is if i should go with the X Line or M Sport Package. I want either a terra or red interior, but cant decide! I think i do prefer the Terra color, but then no sport seats or sport suspension. Dealership said they will only give me $1,500 off MSRP and I am taking my car in on Friday for a trade valuation. Any advice is warranted!

I am only 26 years old and my goal is to keep this car forever, thats why i want to custom order and get exactly what i want!