Start with your d300 and a mf cutting disc. It's; a great compound and finishes extremely well, especially if you're not wanting to go 3+ steps. Try something else IF than doesn't work, I bet you'll be surprised by how well it does. Otherwise, you're just putting your project off for a week, waiting to be recommended a product, then tossing around in your head whether to buy it, then trying to add other stuff to the cart to get free shipping, then sayin "ahh, I'll wait for the next sale" and then just to think theres another product you'd rather have because you saw success from someone else... (Can't tell I've been down that road a few times have you, lol)