Chimney lining is a good idea for a stove, the more efficient the stove, the less heat ends up in the chimney and the more likely you are to end up with tar deposits, which could eventually cause a chimney fire. A liner keeps the flue warmer and reduces deposits. Please get it lined.
minimalist we have the clearview pioneer, it is fab. DH twisted my arm, it was pricey and i am normally miserly. But I am so glad he did. We have burned coal in it, but you have to be careful not to overheat it, coal can burn hotter. A temp gauge stuck onto the flue (you can get little magnetic ones) is a good idea, even for wood fires it helps me gauge when to adjust the vents.
If you have a woodshed in the garden you can order a year's supply of wood quite cheaply. We pay about £100 I think for the year (on average in winter we burn maybe 3 nights per week)