Conjugated verb (“ist”) must be in second position. Aside from that, word order after the verb is determined by some (more or less strict) rules: the subject comes as soon as possible and predicative adjectives (like “möglich” in this case) and direct object (unless represented by a pronoun) come last. Adverbials are governed by the TeKaMoLo rule (Temporal, Kausal, Modal, Lokal) which says that the order should be when, why, how, where. They generally come between the verb (and possible pronominal objects) and the object/predicate.

First position is generally occupied by the subject, but the latter can be displaced by any other adverbial/adjectival/verb phrase that is meant to be emphasised.