Welcome aboard Rhyme, Spanish verb conjugations were actually a source for my proposal a few posts below, Though I decided to have it require a subject in the way it does now that isn't set in stone. I haven't even come up with all of the verb forms we'd need. I plan to add a subjunctive to my proposal in the near future, and probably explicit command and interrogative forms.
I understand if you want to leave conjugations as a subject for the future but I still want to put my two cents in right now. The more done the earlier, the better, if you ask me.
In any case, I second what Rhyme suggested, but shortening the sentences may not be that necessary. Dwarven (or Dwarvish?) could be spoken really fast and efficiently even with the use of agents. For example, French speakers in Canada like me tend to speak with blunted vowels (and in my case, really fast), shortening the time and effort it takes to say even a long sentence. Dwarven words also seem rather short as a whole, and the removal of articles makes otherwise long sentences become much shorter than their English counterparts.
Getting back to what Rhyme said, though, changing the end of a word can shorten sentences immensely, but it's rather complex to learn. Therefore, what I suggest is omitting the future tense completely and switching to the Spanish style of conjugation. Therefore, there's less tenses needed, as present tense can also be used for future tense. Sure, context might be needed to define what tense it is, but it works fine in Japanese. So with a little tweaking we might be able to combine what Rhyme said with the idea of removing a tense.
Although, with Dwarven it could sound a little weird, but it seems dwarfy to me that dwarves would try and make their language as short and simple as possible. Their brain capacities have little room for language due to the vast amounts of stray beard hairs, booze, and XxsocksxX floating around in their skulls.