The article is really good providing scripts and a way of automating maintenance but index and statistics maintenance is an I/O intensive workload. You may consider to scale to premium tiers prior to run index and statistics maintenance tasks, and when the workload finishes scale down to previous tier. You can automate that using T-SQL. That should reduce maintenance time.
Additionally, compacting large objects data (image, text, ntext, varchar(max), nvarchar(max), varbinary(max), and xml) can save disk space but it can increase the time it takes to maintain indexes. If you have a restricted time window for reindexing you can set LOB_COMPACTION to OFF.