@bactgudz They are worth considering perhaps 3 shops and a mox might be right. The advantage workshop does have is that most of the time it will be a Savannah and you often need all the mana you can get in lands. Having played with 4 X Shops I haven't found it to be a hinderance that much of the time but yeah for sure there are occasions where you don't get the Riftstone, one small advantage shops has and it's only come up a couple of times is that sometimes casting the Serum Powder is the correct play if you need that bit more mana, usually you just hold it and discard to Bazaar.

This list still needs a couple of slight changes and playing 3 shops could be well be the best way to do it.