How to annotate optimally a fungal genome without RNA-seq evidence?

Genome information：

1. ~50M nt
2. 2300+ contigs
3. No pre-trained parameters in Augustus
4. There are several well annotated RefSeq genomes of this genus.
5. There are several RNA-seq data of this genus, but not in this species.

My current strategy:

EST evidence:

1. I selected many RNA-seq data that include as many species as
   possible, and de novo assembled these data using Trinity.
2. Only the longest transcripts were saved.
3. All transcript files were catenated into a Total_transcript.fasta file, and cd-hit-est was used to reduce data size with options -c 0.8 -n 5 -s 0.8.

Protein evidence

4. All fungal proteins from SwissProt was download and reduced using cd-hit with options -c 0.8 -n 5 -s 0.8.

5. Proteinsets from RefSeq genomes of this genus were download, catenated, reduced using same methods.

I planed to annotate genome using Maker2 with above Evidence.

I have a doubt about my strategy: Maker2 calls Augustus to ab-initio annotation, but no pre-trained model. How should I do to solve this?

Anyone else could share your valuable suggestions? Thanks anyway.