Cap'n Kobold
Hero
Bear in mind that the only "Random" potions are the ones that you get for free, and that they are determined when created.A first level spell is only needed to have it around for another hour. Compared to the random potion, that seems a lot more powerful. As a sidenote: a sorcerer using sorcery points to create a lot of first level spell slots looks like a good multiclass option. You could get a lot of a 3 level artificer dip.
Right now I see an alchemist rathher as a 3 level dip class. Of course, he gets his unique +int modifier to healing spells and access to healing word, making it quite potent but with the artillerist also adding a d8 to spells in addition to having his flame thrower leaves a slightly bad feeling for the alchemist. If his potions were not random at all, it would at least seem more balanced since a potion of bless that does not take concentration is indeed very powerful.
So you can't guarantee a potion of Boldness from your free ones, but you do know what potions you have available to use after you create them. If you really want a potion of Boldness, you can see if you get one for free, and then just choose to make one with a 1st level slot if you didn't.
As 1st level spells, those potions are pretty good considering you can break the action economy a little. You can stack all those buffs with no concentration, and pass the potions to your party beforehand so they are taking the actions to "cast" them.
Possibly pretty solid for a character wanting more party support options rather than more personal power.